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FOND DU LAC – A Fond du Lac man is now charged with entering unlocked homes, naked, in an attempt to touch women while they slept.

Lucas S. Leffel, 26, appeared by video in Fond du Lac County court Tuesday morning. Leffel is charged with three counts of felony burglary and four counts of attempted second-degree sexual assault.

The series of four home invasions started in late June, with the most recent occurring on Aug. 8. That’s when prosecutors say Leffel’s mother saw something wasn’t right.

“Mr. Leffel was brought to the police department by his mother, because on the last incident, she observed the defendant standing in front of her home, in the early morning hours, in his underwear,” said Fond du Lac County Assistant District Attorney Dennis Krueger.

Krueger said at the same time, police were also zeroing in on Leffel as a suspect.

Court documents say Leffel told police the purpose of the home invasions was for his own sexual gratification, entering homes – naked – to touch women’s buttocks.

Court documents tie Leffel to four separate incidents in the neighborhood on the city’s southeast side. Police say the most recent incident was on the same street where Leffel lives with his mother. In that case, police said Leffel touched a woman’s leg.

FOX 11 talked with neighbors on Sunday, a day after Leffel’s arrest. They said they made sure to lock their doors after the home invasions started, but said, they weren’t overly concerned.

“I was like, okay, it’s a naked guy,” said resident Mike Retzlaff, “I’ll just chase him out of the home with a bat.”

In fact, Krueger said Leffel was chased, after he entered the home of a police officer.

“One occasion he was in a foot chase with one of the victims, who happens to be a police officer with the city of Fond du Lac Police Department,” Krueger said.

Leffel’s court-appointed lawyer argued Krueger’s request of a $200,000 cash bond was excessive for her client.

“He was cooperative with the detective,” said state public defender Laurel Munger, “I believe he might have even turned himself in, when he saw that the police were looking for him.”

But Judge Richard Nuss disagreed, based on the seriousness of the allegations and Leffel’s prior history of burglary. Court documents say Leffel told police “he had committed a burglary when he lived in Michigan in 2006, by entering a neighbor’s home and taking a computer.”

Nuss set a cash bond at $250,000. Leffel’s mother was not in court during the hearing Tuesday. Leffel is due back in court later this month.